Heddle frame for looms



April 6, I954 A. BLICKENSTORFER HEDDLE FRAME FOR LOOMS Filed Dec. 13, 1949 Patented Apr. 6, 1954 HEDDLE FRAME FOR LOTOMS Albert Blickenstorfer, Horgen, Switzerland, assignor to E. Froehlich A. G., Horgen, Switzerland, a corporation of Switzerland Application December 13, 1949, Serial No. 132,782

Claims priority, application Switzerland December 15, 1948 1 Claim. 1

tion of heddle frames from lightweight metal was not fully satisfactory. In particular, actual bearing surfaces were subjected to considerable rubbing and shock action during operation of the heddle frame, which resulted in excessive and premature wear, as the slidable elements carry out greater or smaller swivelling movements in view of the transmission of greater or smaller forces according to the weight of the fabric carried by the heddles at the moment of shed reversal and at the moment when the reed hits the fabric, respectively, said swivelling movements having an adverse effect on the particularly thin web of the slide rails.

It is therefore an object of the present invention to eliminate this and other deficiencies in regard to the construction of heretofore known heddle frames.

It is another object of the present invention to provide means aifording a sturdy but nevertheless lightweight heddle construction which may be subjected to considerable wear during a prolonged period of time of operation.

It is a still further object of the present invention to provide means facilitating the reinforcement of the staves'of the heddle frame substantially without increasing their weight and to firmly anchor in such staves the heddle slide rails for the slidable hooks and similar elements.

The present invention further contemplates effective protection of the heddle frame at locations thereof which are normally exposed to excessive wear, improvement in the appearance of the heddle frame and equalized distribution of the forces thereon, so that the heddle frames may be moved in a well balanced manner during their shedding movements.

More specifically, it is a still further object of the present invention to provide means conducive to an improved heddle structure which will not easily break during operation, is light in weight, durable and gives long and reliable service.

With these objects in view, the invention consists in certain features of novelty in construction, combination and arrangement of parts by 2 which the aforesaid and several other objects hereinafter set forth, are effective, all as fully described with reference to the accompanying drawing and the claim attached to the specification.

In the drawing:

Fig. l is a transverse sectional view of a stave body made in accordance with the invention.

Fig. 2 is a fragmentary sectional View of the lower part of a stave body in a modified form.

teferring now more particularly to the drawing, the stave body I, shown herein, is made of lightweight metal having a hollow space 6 therein which extends substantially the entire height of the stave body. Stave body I terminates in an upper longitudinal edge I, which is channelshaped, while the lower longitudinal edge or end is reinforced at 3. One side of the stave body I is recessed at 8 for the reception of reinforcement means 9, as more clearly explained in co-pending patent application Serial No. 132,783.

Reinforcement piece 3 forms a longitudinal end of stave body I adapted to receive the slide rail 2. This slide rail is made from a material having greater strength than the material of which the stave body I is made, which is provided with a channel I 0, in which one end of the double T- shaped slide rail is permanently anchored. In the embodiment, as shown, in Fig. l, the end or head 5 of slide rail 2 is dove-tailed and terminates in an end face 541 and side faces 5b from which the web 4 extends which, in turn, terminates in the lower end of the slide rail 2.

As can be clearly seen from Fig. 1, the dovetailed end 5, 5a of the slide rail is contained in and completely in contact with the wall defining channel It), while the web extends from said channel therewithout.

The width of the end wall 5a of the rail 2 is not larger than the width 8a of the hollow space 6 in the stave body I so that the reinforcement piece 3 will not be weakened in any way.

Thus the stave body may be manufactured of lightweight metal, while parts thereof, subjected to wear, stress and possible damage, are well protected, namely, stave side wall at 9 and lower longitudinal edge or end at 3, in which the steel rail 2 is firmly anchored. The connection of the web 4 and the end or head 5, 5a of the rail 2 with the thickened or reinforced piece 3 of the hollow stave body I can be carried out by pressing, rolling in or by wedging operation.

In the embodiment shown in Fig. 2, the sides of the rail head which is received in the reinforcement piece 3 are rounded at 50. The width of the end wall 5a is at the most substantially equal to or less than the width 6a of the hollow space extending within the stave body I and adjacent the reinforcement piece 3 thereof.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent, is:

In a heddle frame for looms having a lengthy, lightweight metal stave body with a hollow space therein and provided with an outer side wall and a longitudinal lower edge; two reinforcement means, one of said reinforcement means being recessed in said side wall, the other reinforcement means forming an integral part of said stave body at said longitudinal edge and being provided with a channel, and a T-shaped heddle rail made of a material of greater strength than that of said stave body and contained with one of its ends within said channel and completely in contact with the wall defining said channel, whereby said 20 T-shaped rail is permanently anchored within said other reinforcement means at said longitudinal edge, said rail including a web extending 4 from said one end without said channel, said one end of said rail being dove-tailed in section, the width of the end wall of said dove-tailed end being at the most equal to the width of the hollow space in said stave body.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,686,073 Colman Oct. 2, 1928 2,082,480 Carr June 1, 1937 2,216,682 Zurcher et al Oct. 1, 1940 2,461,496 Kaufmann Feb. 8, 1949 2,482,149 Blickenstorfer Sept. 20, 1949 FOREIGN PATENTS Number Country Date 101,736 Sweden June 3, 1941 195,045 Switzerland Mar. 16, 1938 231,477 Switzerland June 16, 1944 522,032 Great Britain June 6, 1940 

